John lawrie



(No Model.) LAWRIE PLOW ATTACHMENT. No. 295,925. Patented Apr. 1, 1884. r

N PETERS. Phulo-liflmgnphel. Washington u.c

. NrrEn STATES F PATENT OFFICE.

JOHN LAWRIE, OF B ROOKSTON, INDIANA, ASSIGNOR OF ONE-HALF TO JOHN W. HOLTZMAN, SAME PLACE.

PLOW ATTACH M EN-T.

SPECIFICATION forming part of Letters Patent No. 295,925, dated April 1, 1884. Application filed August 18, 1883. (No model.)

ments in Plow Attachments; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

Figure 1 of the drawings is a representation of this invention, and is a vertical sectionalview. Fig. 2is a bottom plan view. Fig. 3 is a detail showing a front view of the plowstandard. Fig. 4 is a detail showing a rear view of the bracket, and Fig. 5 is a side view of the same.

This invention relates to plows and scrapers, and is designed as an improvement on the shovel-plow granted tome by Letters Patent No. 261,001, dated July 11, 1882.

It consists in providing thelower end of the standard-sheth, in its front face, with a hexagonal matrix, and the tri-armed bracket with a hexagonal boss to fit the matrix, and securing the bracket to the standard-sheth by a bolt and nut, so that either point or side of the plow or scraper may be made available by loosening the bolt, making the required shift, and again tightening the bolt, as will be hereinafter fully described, and particularly pointed out in the claims appended.

Referring by letter to the accompanying drawings, a designates the plow-point, which is nearly shield form in outline, is concave in its face, convex on its back or rear side, and has cutting-edges between three equidistant points, I) b If, The central portion of the plow point or blade is necessarily made heavier than the edges, in order to compensate for wear and to render thepoint durable. Three equidistant countersunk perforations, c, are made in the shovel or blade for the reception of the bolts d, bywhich the tri-armed bracket 6 is secured thereto. These arms f f and f are angular, as shown, and rise from the convex face bolt, 2', by'which it is pivoted to the foot of the standard-sheth or auxiliary standard k, as shown. The extremity of this foot is slightly enlarged at its front or face portion, and is provided with a hexagonal matrix, Z, and a central perforation, m, for thebolt z. The triarmed bracket 6 is provided on the rear face of its central portion with a hexagonal boss, n, of a size to fit the matrix Z, in which it rests when in place on the foot.

Taking the plow in the position it occupies when used as a shovel-plow as the normal one, the adjustments will now be described. In the normal position the shorter arm, f, of the bracket must be in a line vertical to and parallel with the standard, the bolt Zlocking it in place. By loosening the bolt i,.liftingthe boss from its matrix, and turning the plow-point on its pivot toward the lefthand until the side of the boss that has been in engagement with the top line of the matrix will engage the next angle at that side, and then tightening the bolt, the plow will turn the furrow to the left., A reverse turn from the normal position will cause the furrow to be turned to the right. It will be observed that the boss can be turned to the second side angles and to the bottom line of the matrix, so that there may be five adjustments from the normal position, to make a right-hand, center, or left-hand plow or scraper.

The device is quite simple in its construction, is easily adjusted, and is strongand durable.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is I 1. The standard-sheth or auxiliary standard 70, provided in its front face, at its lower extremity, with the hexagonal matrix Z, and the central perforation, m, from front to rear, in combination with the tri-arm bracket 6,

having the arms ffand f, thehexagonal boss a bolt and nut for connecting the two together, 0% on the rear face of its central portion, and substantially as specified. IO the central perforation, h, and the pivot-bolt In testimony whereof I affix my signature in and nut i, substantially as specified. presence of two Witnesses.

2. A plow-standard having a hexagonal 1 JOHN LAXVRIE. matrix in its front face near its lower end, in \Vitnesses: combination with a tri arm bracket having a WM. SPENCER,

central hexagonal boss to fit the matrix, and AUG. S. BORDNER. 

